/Engine/Source/Runtime/Engine/Classes/Engine/Texture.h
Get TextureFormatName with platform remaps and conditional prefix this is the entry point API for getting the final texture format name OutFormats will be resized to the number of sub-flavors of the platform (typically just 1) OutFormats[i] gets an array of format names, one per layer
void GetPlatformTextureFormatNamesWithPrefix ( const class [ITargetPlatform](API\Developer\TargetPlatform\Interfaces\ITargetPlatform) * TargetPlatform, [TArray](API\Runtime\Core\Containers\TArray)< [TArray](API\Runtime\Core\Containers\TArray)< [FName](API\Runtime\Core\UObject\FName) > > & OutFormats ) const